The principle of using sodium acid pyrophosphat to clean dirt

 　　Trisodium phosphate is used for removing dirty. The principle of this has be listed as follow;

　　1 The ionization of trisodium phosphate solution can form phosphate and sodium icon ,

　　2 The dirty of silicate salt are the undissolved compound, but there are a few dissolved formed calcium ions in the solution.

　　3 The little calcium and phosphate generating solubility smaller deposits (calcium phosphate),

　　Can make rigid compact of calcium sulfate or calcium silicate continually into soft formed through the water, the transformation of the original scale layer can appear microscopic cracks, and loosen dirt and fall off.

　　This response is by a kind of undissolved compound into another difficult process of compounds called deep transformation of precipitation. But the transformation process requires a certain time and temperature. And the latter because its solubility smaller former solubility, prompted this transformation is more easily.

　　While Trisodium phosphate can also still can have furring sodium osmosis and dispersion.

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